package chapter03.example05;
class  Student{
    public Student(){
        System.out.println("调用了无参构造方法");
    }
}
public class example05 {
    public static void main(String[] args) {
        System.out.println("声明对象...");
        Student stu = null;
        System.out.println("实例化对象...");
        stu = new Student();
    }
}
